From d9aee6d05fb8b1aaae62cda74f6ff0a6a2121851 Mon Sep 17 00:00:00 2001
From: Cory McWilliams <cory@unprompted.com>
Date: Thu, 29 Dec 2022 21:58:54 +0000
Subject: [PATCH] Compile for android.  Probably needs a bunch of work to run,
 but it's a step in a direction.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@4087 ed5197a5-7fde-0310-b194-c3ffbd925b24
---
 Makefile   | 31 +++++++++++++++++++++++++++----
 src/task.c |  4 +++-
 2 files changed, 30 insertions(+), 5 deletions(-)

diff --git a/Makefile b/Makefile
index 4c98cfef..d49f4201 100644
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,7 @@ MAKEFLAGS += --no-builtin-rules
 
 PROJECT = tildefriends
 BUILD_DIR ?= out
-BUILD_TYPES := debug release windebug winrelease
+BUILD_TYPES := debug release windebug winrelease androiddebug androidrelease
 UNAME_M := $(shell uname -m)
 
 CFLAGS += \
@@ -20,13 +20,27 @@ CFLAGS += \
 	-g
 LDFLAGS += -Wl,-gc-sections
 
-debug windebug: CFLAGS += -Og
-debug release: LDFLAGS += -rdynamic
+NDK_PATH := /usr/lib/android-sdk/ndk-bundle
+NDK_SSL_PATH := deps/openssl_android
+NDK_API_VERSION := 30
+NDK_TARGET_TRIPLE := aarch64-linux-android
+
+debug windebug androiddebug: CFLAGS += -Og
+debug release androidrelease: LDFLAGS += -rdynamic
 release winrelease: CFLAGS += -DNDEBUG -O3
 windebug winrelease: CC = i686-w64-mingw32-gcc-win32
 windebug winrelease: AS = $(CC)
 windebug winrelease: CFLAGS += -D_WIN32_WINNT=0x0A00 -DWINVER=0x0A00 -DNTDDI_VERSION=NTDDI_WIN10
 windebug winrelease: LDFLAGS += -static
+androiddebug androidrelease: CC = $(NDK_PATH)/toolchains/llvm/prebuilt/linux-x86_64/bin/clang
+androiddebug androidrelease: AS = $(CC)
+androiddebug androidrelease: CFLAGS += \
+	-target $(NDK_TARGET_TRIPLE)$(NDK_API_VERSION) \
+	-I$(NDK_SSL_PATH)/arm64-v8a/usr/local/include \
+	-Wno-unknown-warning-option
+androiddebug androidrelease: LDFLAGS += \
+	-target $(NDK_TARGET_TRIPLE)$(NDK_API_VERSION) \
+	-L$(NDK_SSL_PATH)/arm64-v8a/usr/local/lib
 
 ifeq ($(UNAME_M),x86_64)
 debug: CFLAGS += -fsanitize=address -fsanitize=undefined -fno-common
@@ -36,7 +50,9 @@ endif
 get_objs = \
 	$(foreach build_type,$(BUILD_TYPES),$(addprefix $(BUILD_DIR)/$(build_type)/,$(addsuffix .o,$(basename $(value $(1)))))) \
 	$(foreach build_type,debug release,$(addprefix $(BUILD_DIR)/$(build_type)/,$(addsuffix .o,$(basename $(value $(1)_unix))))) \
-	$(foreach build_type,windebug winrelease,$(addprefix $(BUILD_DIR)/$(build_type)/,$(addsuffix .o,$(basename $(value $(1)_win)))))
+	$(foreach build_type,windebug winrelease,$(addprefix $(BUILD_DIR)/$(build_type)/,$(addsuffix .o,$(basename $(value $(1)_win))))) \
+	$(foreach build_type,androiddebug androidrelease,$(addprefix $(BUILD_DIR)/$(build_type)/,$(addsuffix .o,$(basename $(value $(1)_android))))) \
+	$(foreach build_type,androiddebug androidrelease,$(addprefix $(BUILD_DIR)/$(build_type)/,$(addsuffix .o,$(basename $(value $(1)_unix)))))
 
 APP_SOURCES := $(wildcard src/*.c)
 APP_OBJS := $(call get_objs,APP_SOURCES)
@@ -105,6 +121,9 @@ UV_SOURCES_unix := \
 	deps/libuv/src/unix/thread.c \
 	deps/libuv/src/unix/tty.c \
 	deps/libuv/src/unix/udp.c
+UV_SOURCES_android := \
+	deps/libuv/src/unix/pthread-fixes.c \
+	deps/libuv/src/unix/random-getentropy.c
 UV_SOURCES_win := \
 	deps/libuv/src/win/async.c \
 	deps/libuv/src/win/core.c \
@@ -282,6 +301,10 @@ windebug winrelease: LDFLAGS += \
 	-lkernel32 \
 	-liphlpapi \
 	-luserenv
+androiddebug androidrelease: LDFLAGS += \
+	-ldl \
+	-lssl \
+	-lcrypto
 
 unix: debug release
 win: windebug winrelease
diff --git a/src/task.c b/src/task.c
index 810d0a65..8e6c1921 100644
--- a/src/task.c
+++ b/src/task.c
@@ -29,7 +29,9 @@
 #include <backtrace.h>
 
 #ifndef _WIN32
+#ifndef __ANDROID__
 #include <execinfo.h>
+#endif
 #include <unistd.h>
 #endif
 
@@ -1147,7 +1149,7 @@ JSValue tf_task_allocate_promise(tf_task_t* task, promiseid_t* out_promise)
 #ifdef _WIN32
 	count = CaptureStackBackTrace(0, sizeof(buffer) / sizeof(*buffer), buffer, NULL);
 	stack_hash = fnv32a((const void*)buffer, sizeof(void*) * count, stack_hash);
-#else
+#elif !defined(__ANDROID__)
 	count = backtrace(buffer, sizeof(buffer) / sizeof(*buffer));
 	stack_hash = fnv32a((const void*)buffer, sizeof(void*) * count, stack_hash);
 #endif